用S型皮托管测固定污染源排气参数的方法探讨

针对固定污染源排气监测实际工作用S型皮托管测定静压方法有争议的问题进行了理论分析和低速风洞试验。结果表明,用S型皮托管测固定污染源排气静压的平行法和垂直法二方法都在不影响排气量和污染物排放量测定结果的范围内;用全压与平行法静压差作为动压来计算流速可影响较大。     

Optimization of C/N ratio for preparation of protein-rich and multi-enzymes feed thallus through synergic fermentation of mixed distillers'grains

A new procedure of determining optimal C/N (the rate of carbon source to nitrogen source) of mixed distillers' grains for combined bacteria synergic fermentation is established. At the same time an improved method evaluating bacteria growth, called method of dry cell weighing by filtering is developed. For each combination of C and N , their initial and residual contents before and after fermentation respectively are determined. Then followed the calculation of utilization of C and N sources by the compound bacteria. The optimal C/N is finally located from among the utilization of C and N of several combinations and the weight of produced mass of oven-dried thallus The conditions of fermentation are: inoculum size 10%, temperature 30.0℃, rotational speed 170 r/min, shake culture time 48h. The best results obtained from orthogonal experiments are: maximum mass of oven dried thallus is 14.693g in a liter liquid medium, maximum utilization rate of carbon source is 98.13% and maximum utilization rate of nitrogen is 78.14%. Optimal C/N is 5.1.     

工业污染源综合评价层次分析法

根据层次分析法原理，可将污染源分解成污染要素，再分解为影响因子再分解为次级因子层，构造污染源评价的多层次评价结构模型，根据评价对象的性质和特点，建立指标体系，再据确定的取值规则，以各因子层构成准则层，以各污染源构成方案层，建立判断矩阵计算总排序权值，进行污染源综合评价。     

道路建设生态影响评价的方法

分析了中国目前道路建设的生态影响评价的现状及存在的主要问题，结合日本道路建设的生态影响评价程序与方法，提出了未来中国道路建设生态影响评价方法研究重点。     

浅议农业源和生活源对长桥海的影响

通过对蒙自下游长桥海水质状况和主要污染源农业源、生活源的分析,提出污染控制对策。     

30万吨合成氨厂环境噪声综合评价

镇海炼化股份有限公司化肥厂针对装置区噪声污染严重这一现状，积极开展噪声源防治工作经过几年来的噪声综合治理，提高了化肥厂噪声合格率，改善了厂区环境。     

Method of pollution sources assessment in relation to residential site selection

Much investigation supports a high incidence of disease and death rates when people live in ambient polluted air for a long time. Thus, the location of residential sites is important from a public health viewpoint. The method outlined in this paper is useful for determining the location of residential sites based on pollution sources assessment.     

京津风沙源区防风固沙功能的时空变化及其区域差异

防风固沙功能是京津风沙源治理成效的关键监测指标。以往研究注重局地防风固沙功能的评估,对全区防风固沙功能的时空变化与内部差异揭示不足。基于京津风沙源区多期遥感数据,采用修正风蚀方程与GIS空间统计技术,评估分析了2000-2015年防风固沙功能的整体变化及其区域差异。结果表明:(1)京津风沙源区年均防风固沙量为28.98亿t,防风固沙能力为68.24 t/hm~2,且均随年份变化波动增加,年均增速分别为1.10%和0.71%;(2)京津风沙源区防风固沙能力呈西北高、东南低趋势,有49.06%的区域防风固沙能力高于70 t/hm~2,评估期内有54%的区域防风固沙能力明显提高;(3)浑善达克沙地亚区、典型草原亚区和荒漠草原亚区的防风固沙量累计为全区防风固沙总量的88%,燕山丘陵山地水源保护亚区和晋北山地丘陵亚区的防风固沙能力提升最显著;(4)锡林郭勒盟、赤峰市和乌兰察布市的防风固沙量合计占全区防风固沙量的77%,朔州市与包头市防风固沙能力较高,北京市与天津市防风固沙能力增速较高。因此,未来应重视分区施策治理与西部和北部防风固沙功能提升。     

浅议提高废水污染源监测数据代表性

对废水污染源监测中影响监测数据代表性的主要因素进行了分析,并对提高废水污染源监测数据代表性提出了可行性建议。     

农业清洁生产与东圳水库饮用水源保护

以东圳水库为例论述了饮用水源保护与库区果园实行农业清洁生产的关系，并对饮用水源的保护提出一些对策措施。